刚刚，开盘大跌

Group 1 - The South Korean Composite Index opened down over 2%, with most semiconductor stocks declining, influenced by AMD's disappointing earnings forecast [1] - Major semiconductor companies like Samsung Electronics and SK Hynix saw their stock prices drop over 4% at the opening [1] - In Japan, the Nikkei 225 index initially fell but later turned positive during the trading session [1] Group 2 - SoftBank Group's stock price fell over 5%, with the CEO of Arm stating that SoftBank has no intention of selling Arm shares, anticipating that the data center business will become the largest segment in the coming years, surpassing the mobile business [1] - SoftBank announced that its wholly-owned subsidiary SAIMEMORY has signed an agreement with Intel to advance the commercialization of next-generation high-capacity, high-bandwidth, low-power memory technology, Z-Angle Memory (ZAM) [1] - Other companies such as Daikin Industries, NEC, and Advantest also experienced significant declines in their stock prices [1][2]